Here you will find presentations given at COMSOL Conferences around the globe. The presentations explore the innovative research and products designed by your peers using COMSOL Multiphysics. Research topics span a wide array of industries and application areas, including the electrical, mechanical, fluid, and chemical disciplines. Use the Quick Search to find presentations pertaining to your application area.

Modeling Implementation of Smart Materials such as Shape Memory Alloys and Electro-Active Metamaterials

Manuel Collet
PhD
Femto-STInstitute UMR CNRS 6174 Dept Applied Mechanics,
Besancon, France

Manuel Collet is a member of the Department of Applied Mechanics of the FEMTO-ST Institute. He graduated with a degree in Mechanical Engineering from Ecole Centrale de Lyon in 1992 and obtained his PhD in 1996 about Active control of vibrating structures by mean of semi distributed piezoelectric patches. His main research lines currently involve smart structures and active Control, ...

The Full-System Approach for Elastohydrodynamic Lubrication

N. Fillot[1], T. Doki-Thonon[1], and W. Habchi[2]
[1]CNRS, INSA, Université de Lyon, Lyon, France
[2]Department of Industrial and Mechanical Engineering, Lebanese American University, Byblos, Lebanon

A ball is in contact with a plane, and a lubricant separates the two surfaces to decrease friction during their relative motion. To avoid wear, the lubricant film thickness should be higher than the surface roughness. The goal of this paper is to show how it is possible to solve efficiently the problem of elastohydrodynamics lubrication with COMSOL Multiphysics®, using a PDE (Partial ...

FEM Based Studies of a Mg/Al Hybrid Component Joint Regarding Corrosion Prediction

D. Höche[1]
[1]Helmholtz-Zentrum Geesthacht, Germany

The model can be utilized for a virtual design of a hybrid joint interms of corrosion prevention. Structures can be optimized by the simulations by tailoring the parameters to get the most suitable result towards a Computer-Aided Engineering CAE regarding corrosion protection. This kind of computer based studies is a very useful method to accelerate developments in light weight structural design ...

Understanding the Magnetic Field Penetration in Mesoscopic Superconductors via COMSOL Multiphysics® Software - new

I. G. de Oliveira[1]
[1]Universidade Federal Rural do Rio de Janeiro, Seropédica, RJ, Brazil

Introduction: One of the main characteristic of the superconductors is its diamagnetic response of applied magnetic fields. The superconductors refuse the penetration of magnetic field into its interior, it is the well know Meissner effect, B=0 into the superconductor sample. However when the applied field reach a determined value, the magnetic field can enter. There are two different ways of ...

2D Simulation of Cardiac Tissue - new

S. Esfahani[1]
[1]University of South Florida, Tampa, FL, USA

A two-dimensional atrial tissue model has been constructed in COMSOL Multiphysics® software to study the propagation of action potential and electrograms. The model presents the atrial electrograms recorded with a mapping catheter. A 2D atrial tissue model is simulated using the Courtemanche et al. cell model equations. PDE in coefficient form was used in COMSOL Multiphysics® to reproduce the ...

Simplified CFD Modeling of Air Pollution Reduction by Means of Greenery in Urban Canyons

S. Lazzari [1], K. Perini [1], E. R. di Schio [2], E. Roccotiello [3],
[1] University of Genova, Dept. of Sciences for Architecture, Genova, Italy
[2] University of Bologna, Dept. of Industrial Engineering, Bologna, Italy
[3] University of Genova, Dept. of Sciences of Earth, Environment and Life, Genova, Italy

As known, air quality in urban areas is dramatically affected in particular by the noteworthy presence of respirable suspended particulate matter (such as PM2.5), nitrogen oxides (NOx), carbon monoxide (CO) and hydrocarbons (HC), which are mainly due to traffic-induced emissions. On the other hand, it is also known that vegetation can help restoring the environmental quality of dense urban areas ...

Fluid-Structure Interaction Modeling for an Optimized Design of a Piezoelectric Energy Harvesting MEMS Generator

I. Kuehne[1], A. van der Linden[2], J. Seidel[1], M. Schreiter[1], L. Fromme[2], and A. Frey[1]
[1]Siemens AG, Corporate Research & Technologies, Munich, Germany
[2]Comsol Multiphysics GmbH, Göttingen, Germany

This paper reports the design of a piezoelectric energy harvesting micro generator for an energy autonomous tire pressure monitoring wireless sensor node. For our design we use a piezoelectric MEMS generator approach without additional mass. The intrinsic mass of the cantilever is in the microgram region and the resulting acceleration forces are very small. The generator has a triangular ...

Modeling of Space-Charge Effects in 3D Thermionic Devices

P. Zilio [1], W. Raja [2], A. Alabastri [3], R. Proietti Zaccaria [2]
[1] Istituto Italiano di Tecnologia, Italy
[2] Istituto Italiano di Tecnologia, Italy
[3] Rice University, USA

The formation of space charge clouds is a well known problem that affects thermionic emitters in regimes of high current emission. Although some analytical models have been presented, suitable for 1D geometries, the modeling of the problem in complex 3D structures remains a challenge due to the mutual coupling between electron trajectories and field they produce. Here we propose a model able to ...

Numerical Simulation of the Lithium-Ion Battery Cell Discharge Characteristics - new

Z. Umar[1], D. Ledwoch[1], L. Komsiyska[1], S. Vasić[[1]
[1]EWE-Forschungszentrum für Energietechnologie e. V, Oldenburg, Germany

In general battery cells are charged/discharged using constant current or constant power expressed as C-Rates and P-Rates respectively. We are developing a single cell-level Li-Ion battery model in order to simulate the performance and the physicochemical phenomena under power discharging mode (P-Rate). The P-Rate is defined as the measure of the rate at which a battery charges/discharges ...

The Microgeometry of Pressure Seals - new

R. P. Ruby[1], G. Kulkarni[2], U. Kanade[1]
[1]Noumenon Multiphysics Pvt. Ltd., Pune, Maharashtra, India
[2]Oneirix Engineering Laboratories Pvt. Ltd., Pune, Maharashtra, India

Seals or gaskets that are compressed between walls of a container are important to many industrial applications. Understanding the performance of such seals requires an understanding of the microscopic geometry of the sealing surfaces, because the fluid seeps around the undulations of such surfaces. This paper presents strong computational evidence that the microgeometry of such surfaces depends ...